Permutation-lock.



0. R. KlRKPATRlCK.

PERMUTATION LOCK.

APPLICATION men OCT. 2. 1916.

1,246,610. PatentedN0v,13,191?.

UNITED STATES PATENT OFFTQEE.

OTEY R. KIRKPATRICK, OF MINERAL TELLS, TEXAS, ASSIGNOR F ONE-HALF TO J. MACK SMITH, OF MINERAL VELLS, TEXAS.

PnnMU'rarion-Locir.

Specification of Letters Patent.

Patented Nov. 13, 1917.

Application filed Gctober 2, 1916. Serial No. 123,259.

To all whom it may concern.

Be it known that I, OTEY R. KIRKPATRICK, a citizen of the United States, residing at Mineral .Vells, in the county of Palo Pinto and State of Texas, have invented certain new and useful Improvements in Permutation-Locks, of which the following is a specification.

My invention relates to permutation locks for milk bottles and other articles; and the object is to provide boxes or receptacles which will protect milk bottles and other articles against theft. It is well known that milk is delivered in bottles by carriers who deliver the bottles before daylight and that the bottles of milk are often stolen. The object of this invention is to provide a small receptacle in which the bottles or other articles can be placed and securely locked. Milk bottles are mentioned because they are delivered in the dark and are stolen in the dark of the night. Tt is apparent that the improved locked boxes can be used for various other purposes, as articles of merchandise which are delivered when parties are away from home. Another object is to provide locking devices which can be operated by sound, that is, the locking devices create sounds by which the operator can lock and unlock the boxes in the dark. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claim.

Reference is had to the accompanying drawings which form a part of this application.

Figure 1 is a perspective view of the box. Fig. 2 is a front elevation of the same. ig. 3 is a front elevation of the same with the door open. Fig. 1 is a broken section of the box, showing sections of the locking devices. Fig. 5 is a side elevation of the locking devices, showing a portion of the door. Fig. 6 is a detail view of the sounding locking members. Fig. 7 is a detail view of the inner locking member and Fig. 8 is a detail view of the outer locking member. Fig. 9 is an interior elevation of a portion of the locking mechanism, the inner locking member being omitted from this view. Fig. 10 is an enlarged side elevation of the rotating members. Fig. 11 is a detail view of the locking bolt.

Similar characters of reference are used to indicate the same parts throughout the several views.

The improved receptacle herein shown may be constructed of sheet metal. The box 1 may be of any suitable dimensions and may be attached to the side-of the house or other place by screws 2 from the inside of the box so that a person cannot unscrew the screws and take away the box. The-box is provided with a door 3 which may be suitably hinged to the box. A locking bolts: is slidably mounted on the inside of the door 3 by means of brackets 5 attached to the door. This bolt has a locking .member or lug 6 projecting inwardly to be engaged by the rotatable locking disks 7 and 8, these disks having recesses 9 and 10 respectively, to be engaged by the locking lug 6. The bolt i has also a lug or knob 11 projecting outwardly through a slot 12 in the door 3 so that the bolt can be moved by the hand when it is released for releasing the door 8 and also for locking the door. The bolt 4: may engage any suitable stop 13 which is attached to the interior of the box. The bolt 4 is held in the locked position. by two rotatable disks 7 and 8 which are provided with recesses 9 and 10 to receive the locking lug 6 and the box can be unlocked only when the recesses 9 and 10 are brought in alinenient and in position to receive the lug 6 so that the bolt may be shifted to release the stop 13. The inner disk 7 is rotated by means of a shaft which has a square portion 1% which enters a square opening 15 in the disk 7. The shaft is turned by means of a knob 16 and the shaft has a cylindrical portion 17 which is journaled in a sleeve 17. The disk 8 is revolved or rotated by a sleeve shaft which has a square portion 18 which enters a square recess in the disk 8 and which has a cylindrical portion 19 which is journaled in the door 3. The sleeve 19 is turned by a knob 20 which is rigid with the part 19. The knob 20 is provided with a gaging lug 21 for locating the turns or starting point of the knob. The knob 16 is also provided with a gaging lug 22 for the same purpose.

The sounding devices include a spring 23 which is attached to the inside of the door and has a central arm 2% which is perforated to receive the shaft 17. The spring 23 will thus be prevented from being shifted out of place. Each disk 7 and 8 has a plurality of recesses 25 arranged in series radially about the center. The spring 23 has a clicking arm 26 which is provided with a tip or lug 27 adapted to engage recesses in disk 7 and the spring 23 has an arm 28 Which has a lug 29 adapted to enter the recesses in disk 8. When the disks 7 and 8 are turned, the lugs 27 and 29 Will fall into the recesses and make sounds which can be distinctly heard so that a party Will know how far to turn each disk '7 or 8. The combination can be changed if detected. A disk can be set so that any convenient number of clicks Will be made before the recess, as 9 or 10, will bebrought in position to receivethe locking lug 6, as shown in Fig. 9. Various changes in the sizes, proportions, and construction of the VflliOUS parts may be made Without departing from my invention.

hat I claim, is,

A safety lock having means for locking a door consisting of a slidable bolt, a stop on the inside of a box to be engaged by said bolt in the locked position, inner and outer rotatable disks for holding said bolt in the locked position, each disk having a recess to receive the end of said bolt to permit the bolt to be moved to the unlocked position and having a series of slots, means for rotating each disk independently of the other, and a sounding mechanism for determining when each'disk is brought into position to receive the end of said bolt in the unlocked position, consisting of a spring engaged by a shaft and having arms projecting in opposite directions for engaging said slots.

In testimony whereof, I set my hand, this 27th day of September, 1916..

OTEY R. KIRKPATRICK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

